Can 2 different files have the same MD5?

Generally, two files can have the same md5 hash only if their contents are exactly the same. Even a single bit of variation will generate a completely different hash value. There is one caveat, though: An md5 sum is 128 bits (16 bytes).

Can MD5 be duplicated?

Although random MD5 collisions are exceedingly rare, if your users can provide files (that will be stored verbatim) then they can engineer collisions to occur. That is, they can deliberately create two files with the same MD5sum but different data.

Is MD5 always the same?

Yes, MD5 always outputs the same given the same input. That’s how it’s used for passwords. You store the hash in the database, then when the user types their password in, it’s hashed again and the two hashes are compared. NOTE: MD5 is not recommended for hashing passwords because it’s cryptographically weak.

Is there a possibility that 2 different files will yield the same hash value?

The general answer is: “by comparing their hashes only, you cannot be sure the two files are identical”.

Can two messages have the same hash?

Yes, it is possible. It is called a Hash collision. Having said that, algorithms such as MD5 are designed to minimize the probability of a collision.

How many MD5 combinations are there?

Ideally, it should take work comparable to around 264 tries (as the output size is 128 bits, i.e. there are 2128 different possible values) to find a collision (two different inputs hashing to the same output).

Can MD5 be broken?

The MD5 message-digest algorithm is a cryptographically broken but still widely used hash function producing a 128-bit hash value. Although MD5 was initially designed to be used as a cryptographic hash function, it has been found to suffer from extensive vulnerabilities.

What is the chance of collision for MD5?

MD5: The fastest and shortest generated hash (16 bytes). The probability of just two hashes accidentally colliding is approximately: 1.47*10-29.

Can two different files have same checksum?

MD5 is frequently used to compute checksums because it is computationally unlikely that two different files will ever have the same checksum. If you have 65,000 files to compare, however, the chance that two of them have the same checksum, though different, is quite high.

Can 2 files have same SHA256?

We use SHA-256 because this 256-bit key is much more secure than other common hashing algorithms. Collisions are incredibly unlikely: There are 2256 possible hash values when using SHA-256, which makes it nearly impossible for two different documents to coincidentally have the exact same hash value.

What is MD5 collision?

A collision is when you find two files to have the same hash. The research published by Wang, Feng, Lai and Yu demonstrated that MD5 fails this third requirement since they were able to generate two different messages that have the same hash.